Home / 922,640.36-1,384,507.10-390,132.20

Finding the Fourth Proportional to 922,640.36, 1,384,507.10 and 390,132.20

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Solution

The fourth proportional to 922,640.36, 1,384,507.10 and 390,132.20 is: 585,429.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,640.36 : 1,384,507.10 = 390,132.20 : x
  2. Step 2: Convert to fraction form
    922,640.36/1,384,507.10 = 390,132.20/x
  3. Step 3: Cross multiply
    922,640.36x = 1,384,507.10 × 390,132.20
  4. Step 4: Simplify right side
    922,640.36x = 540,140,800,838.62
  5. Step 5: Solve for x
    x = 540,140,800,838.62/922,640.36
  6. Step 6: Final answer
    x = 585,429.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.